Does it really matter who made the film? Is it relevant? No. There are no laws in this country prohibiting the making of that film. The film was made, and crazies all over the world react exactly the way you'd expect crazies to react.
Yeah, that was pretty much the kind of reaction you'd expect. Which means that while there's nothing illegal about making a film like this, the people behind the message (which may not have been everyone involved in the film) are at the very least a bunch of assholes. Having freedom of speech still doesn't make you a good person if you engage in speech with the intention of seeing people get hurt.
The violent reactions to the film are totally unacceptable from any civilized people. But I see nothing wrong with thinking that the people behind the film are still a bunch of scumbags...it's not an either/or sort of deal.